Centrifugal spinning bucket



Aug- 3, 1943-l `a-l. .1. MCDERMOTT ETAL 2,325,787

` CENTRIFUGAL SPINNING BUCKET l Filed Feb. 27, 1942 2 sheets-Sheet 1 'INVENTOR HENF'YJ MEDEF'MDTT BY Flr/HPD W STF/NLEY Y H. J. MCDERMO'TT Erm. 2,325,787

CENTRIFUGAL SPINNING BUCKET Aug. 3, 1943.

2 Sheets-Sheet 2 Filed Feb. 27. 194.2r

I w. H] n' INVENTOR. HENRY MCDEFMUTT BY F/:HFIFD WETFINLEY v ATTORN? Patented Aug. a, 194s CENTRIFUGAL SPINNINGVBUCKET Henry J. McDermott, Prospect Park, and Richard W. Stanley, Drexel Hill, Pa., assignors to American Viscose Corporation, Wilmington, Del., a

corporation of Delaware Application February 27,1942, serial No. 432,708

(ci. 571s) Z Claims.

Y `This invention relates to improvements in centrifugal spinning buckets, and particularly to means for removing the cakes of wound lamentary material therefrom. l

It is an object of the invention to provide a means for facilitating the removal of cakes from spinning buckets and to facilitate their handling and transportation, while protecting them from damage. An additional object is to provide a novel cover locking means for spinning buckets which are automatically released upon application of the cake-removing means. Further objects of the invention will be apparent from the drawings and description thereof.

In the drawings illustrative of the invention,

Figure 1 shows the device of the invention in Vposition for removing a cake from a spinning bucket,

Figure 2 shows areleasing device for the device of Figure 1,

Figure 3 shows a modified form of cake-removing device;

Figure 4 shows the combination of the device of Figure 1 with a, modified form of cover,

Figure 5 is a plan view of the modiiied form of cover of Figure 3, and

y,Figure 6 is another modification of the cover.

As shown in Figure 1, the spinning box 2 is provided with a removable bottom 3 and a cover 4. The spinning bucket is also provided with a spindle bearing 5 and the funnel guide centering button or plug 9. During the formation of the 'cake 1 between the removable bottom 3 and the cover 4, theA cover is held in place by a Vsuitable ring of rubber or other flexible material adapted to t in the groove 8 provided in the upper internal periphery of the spinning bucket for that purpose.

After the Winding of the cake-1 in the bucket, the rubber ring is removed from the groove 8 and the cake is ready to be removed together with the removable bottom and cover by the device constituting this invention. The cake-removing means is constituted of the cylindrical tube 9 fastened at its upper end to the ared member I0 across whose diameter the handle H extends. This handle Il may be a solid rod or hollow tube as shown. The other extremity of the tube 9 is` flared inwardly as at I2 and this'inwardly aring portion is provided with slots I3 adapted to accommodate the spring member I4. This spring member has a central portion I5 in the form of an inverted U and intermediate hook-like portions IB from which relatively straight portions I1 extend along the inner face of the tube 9within which they are fastened by suitable rivets.

The inner periphery of the removable bottom 3 slopes downwardly and inwardly in order to cooperate with the flared portion l2 of the cakeremoving means so that the lower end of the cake-removing means seats itself firmly upon the removable bottom 3. This removable bottom is formed with an undercut portion to accommodate the ho'oks so that when the cake-removing means is inserted to its full extent within the spinning bucketthe spring hooks engage beneath the removable bottom 3 and clamp it firmly in position against the seat provided on the cake-removing means. This rm engagement of the removable bottom with the cylindrical tube has .the advantage that it prevents distortion of the cake during manually by grasping the handle I I.

handling that otherwise would occur because of sudden jolts, jerks and any swinging movements.

The outside diameter of the tube 9 of the cakeremoving means is preferably made for a sliding fit within the inside periphery of the cover 4 vso that the coveracts as a guide for the tube. The cake removing means therefore cannot be in- Asertedin a manner which would cause damage to the'inside of the cake 1. A

The cake-removing means is easily inserted It is surely guided into seating engagement with the bottom 3 without risk of damage to the interior of the cake 1, and upon removal of the cake with cover and bottom, there is obtained a cake vpackage which is readily transportable as such to the next location of operation upon the cake.' This transportation may be to any point of operation,

particularly to a conveyor or to amachine for Whatever the point of desti-` wrapping the cake. nation'of the cake package, the operating machine at that point may be provided witha suitable releasing means, such as shown in Figure 2.

For example, a belt or chain conveyor may be proextending below the removable bottom 3. As

shown in Figure 2, the annular surface I9 adjoins an outer downwardly sloping surface 2l which fits within the annular foot or base formed about the removable bottom 3. However, this is not essential, it being only necessary that a depression be provided to accommodate the annular foot or base of the bottom 3. Since this foot or base may have numerous other shapes and sizes andsince it may be desirable to use different removable bottoms having different shapes of bases, it is preferable not to have the platform shaped to conform too closely to the base or foot of any given removable bottom as is the case in Figure 2.

Figure 3 shows a modified form of the cake removingv device in position in a spinning bucket (not shown) having a cover 4 and removable cake-supporting member 3 (these parts being shown in part). This device is similar to that of Figure l, but the lower part of the cylindri-y cal tube 9 is cut away at regularly spaced portions, as at 22, leaving the uncut portions therebetween in the form of resilient prongs 23 having inwardly tapered feet 24 which are provided with the grooves 25 which are adapted to make a firm seating engagement with the inner periphery of the member 3. The tube 9 may be 25 pressed collar may be applied to any form ofthe -device and assures that the device maintains firm engagement with both the cover and the cake-supporting member bytaking up any slack that would otherwise result from-axial shown in combination with a'spinning box having a modied type of cover-locking means. The cover 21 of Figure 4 is provided with a plurality of ngers 28 pivoted within recesses at` the outer periphery thereof. The spinning bucket is provided with a groove 29 adapted to cooperate with the fingers, which by virtue of their being eccentrically weighted about their pivots 30 are thrown outwardly by centrifugal force into the position shown in Figure 5, thereby forcing a pin 3l into the position shown in which it protrudes internally of the central opening 32 inthe cover. The external sloped surface of the flared end I2 of tube 9 acts as a cam to force the pin 3l against the tail 33 of the finger thereby retracting it from the groove 29 in the spinning bucket and releasing the cover. As shown in Figure 4, the external surface of the flared portion I2 oi.' the cake-removing means is formed with a substantially constant slope to assure smooth and continuous cam action along its entire length.

A modification of the bucket-engaging ngers shown in Figure 6 may be substituted for that.

the cake-removing device is inserted into Athe bucket. While preferred embodiments of the invention have been shown, it is to be' understood that changes and variations may be made without departing from the spirit or scope of the invention as dened bythe appended claims.

What we claim is: f 1. In combination, a spinning bucket having a removable cake-supporting element provided withv a seat facing at least partially away from the bottom of the bucket, means for removing said element comprising a substantially rigid member terminating in a portion adapted to seat itself firmly upon the seat portion of said ele-` ment, and means for securing said removing means to said element with the member firmly seated upon the element.

2. In combination, a spinning bucket havingl a removable bottom provided with a seat facing at least partially toward the mouth of the bucket,

means for removing'said bottom comprising a.

y, substantially rigid cylindrical member terminatingin a portion adapted to ,seat itself flrmly upon the seat portion 'of said bottom, and means for securing said removing means to said bottom with the member firmly seated upon the element. 4

3. In combination, a spinning bucket having y a removable bottom and a cover having a central opening, means for removing said bottom comprising a cylindrical member having-a sliding fit Within said opening and terminating in a portion adapted to seatvitself firmly upon. a

cooperating portion of said bottom, and means for securing said removing means to said bottom 4. In combination, a spinning bucket having a removable bottom and a cover having a cen- 40 tral opening, means for removing said bottom comprising a cylindrical member having a sliding fit within said opening andy terminating in a portion adapted to seat itself firmly upon a cooperating portion of said bottom, and releasable means for`securing said removing means to said bottom.

5. In combination, means for taking hold of a removable cake-supporting element, a support outside of said bucket upon which the cake is to be deposited, and means on said support for automatically releasing the removable element from said rst-mentioned means upon depositl of the cake thereon.

6. In combination, means for taking hold of a removable bottom supporting a cake thereon, a support outside of said bucket upon which the cake is to be deposited, and means on said support for automatically releasing the removable bottom from .said first mentioned means upon deposit of the cake thereon.

7. In combination, means insertable into a spinning bucket for taking hold of a removable bottom supporting a cake thereon, a support outside of said bucket upon which the cake is to be deposited, and means on said support for automatically releasing the removable bottom from said flrst-mentioned means upon deposit of the cake thereon.

8. In combination, a spinning bucket having a removable cake-supporting element and a cover, means on sai-d coverfor holding it in place on said bucket, means for taking hold of said element, and means on the latter means for releasing said cover holding means.

9. In combination, a spinning bucket having a removable bottom and a cover, means on said cover for holding it in place on said bucket, means removable bottom and a cover, means on said cover for holding it in place on said bucket, means insertable into said bucket for taking hold oi said bottom, and means on the latter means for releasing said cover -holding means upon insertion v thereof into the bucket for taking hold of said bottom.

11. In combination, a spinning bucket having a removable cake-supporting element and an annular cover, means on said cover for holding it in place on said bucket comprising at least one member -movable to a retracted position and to a position extending internally of the inner periphery of said cover upon motion of the coverholding means to bucket-engaging position, means insertable into said bucket for taking hold of said element, and an annular sloping surface on said insertable means for engaging and moving said member during insertion to release said coverholding means.

12. In combination, a spinning bucket having a removable bottom and an annular cover, means on said cover for holding it in place on said bucket comprising at least one member movable to a retracted position and to a position extending internally of the inner periphery of said cover upon motion of fthe cover-holding means to bucket-engaging position, means` insertable into said bucket for taking hold of said bottom, and an annular sloping surface onsaid insertable means for engaging and moving said member during insertion to release said cover-holding means.

13.1In combination, a spinning bucket having a removable bottom and an annular cover, means on said cover for holding it in placeon` said bucket comprising at least one member movable to a retracted position and to a position extending internally of the inner periphery of said cover jupon motion of the cover-holding means to bucket-engaging position, means insertable into saidbucket for taking hold of said bottom .and terminating in arportion adapted to seat itself rmly upon a cooperating portion of said bottom, and an annular sloping surface on saidinsertable means for engaging and moving said member during insertion to' release said 'cover-holding means.

14. In combination, a spinning bucket having a removable bottom and an annular cover, means A on-.said cover for holding it in place on said bucketcomprising at least one member radially movable to a retracted position entrelywithin said .cover andto a position extending internally of the inner periphery of said cover upon motion ofthe cover-holding means to bucket-engaging position, means insertable into said 'bucket forv taking hold of said bottom, and an annular sloping surface on said insertable means for engaging and moving saidl member. to retracted positionv during insertion to release said cover-holding means,

15. In combination, a spinning bucket having a removable bottom and an annular cover, means on said cover forv h'olding it -in place on said bucket comprising at least one centrifugally oper-L atedbucket-engaging member radially movable to a retracted position entirely within said cover and to a position extending internally of the inner periphery of said cover upon motion of the cover-holding means to bucket-engaging position, means insertable into said bucket for taking hold of said bottom, and an annular sloping sur- `face on said insertable means for engaging and moving said member to `retracted position during insertion to release said cover-holding means.

16. vIn combination, a spinning bucket havingv a removable cake-supporting element and an annular cover, means on said cover for holding it in place on said bucket comprising at least one member radially movable to a retracted position entirely within said cover and to a position extending internally of the inner periphery of said cover upon motion of the cover-holding means to bucket-engaging position, means insertable into said bucket for taking hold of said element, and an annular sloping surface on said insertable means for engaging and moving said member to retracted position during insertion to release said cover-holding means.

17. In combination, a Vspinning bucket having a removable bottom and an annular cover, means on said cover for holding it in pla'ce on said bucket comprising at least one member radially movable to a retracted position and to a position extending internally of the inner periphery of -said cove." upon motion of the cover-holding means to operative position, means insertable into said bucket for taking hold of said bottom comprising a cylindrical member terminating in a portionadapted to seat itself firmly upon a cooperating portion ofsaid bottom, said portion constitutinga sloped surface adjoining the cylindrical portion of said member whereby insertion of said means into said bucket causes engagement of said sloped surface with said radially movable member and causes motion of said member to retracted position to release said cover-holding means.

18. In combination, a spinning bucket having a removable bottom and an annular cover, means on said cover for holding it in place on said bucket comprising at least one bell-crank lever having one arm arranged for motion into and out of bucket-engagement, means insertable into said bucket for taking hold of said bottom, and means on said insertable means for engaging and movremovable bottoml and an annular cover, means on said cover -for holding'it in place on said bucket comprising at least one bell-crank lever having one of its arms arranged to bemoved into n andout of bucket engaging position and being eccentrically weighted so that centrifugal force developed upon rotation of the bucket causes motion thereof into bucket-engaging position, means insertable into said bucket 'for takmg hold of said bottom terminating in a portion adapted to seat itself'firmly upon a cooperating yportion of said bottom, and vmeans on said insertable means for moving saidaleverto release said coverholding means. v

20. In combination, a spinning-bucket having a Aremovable cake-supporting member and a cover, means on said cover for releasably 1o :king said cover to said bucket, a device insertable into said bucket f or removing said member, and means en said device for releasing said cover-locking means.

HENRY J. McDERMO'II. RICHARD W. STANLEY 

